Process for producing gas of bituminous fuel mixed by the gas of the distillation of coal



E. DOLENSKYf. PROCESS FOR PRODUCING GAS or snummous FUEL MIXED BY THE GAS or THE DISTILLATION 0F com... APPLICATION FILED MAYSI, I9I6.

1,384,453. Patented July 12, 1921.

UNITED STATES PATENTOFFICE.

nuenn DOLENSKY, or FRANKFORTON-THE-MAIN, GERMANY.

rnoonss non rnonucrne ens or BITUMINOUS FUEL MIXED BY THE Gas on 'THE DISTILLATION "or COAL. r

' Specification of Letters Patent. Patented July 12, 1921 Application filed May 31, 1916. Serial No. 100,979.

To all whomitmag concem; a

. Be it known that I, EUGEN DOLENSKY', a citizen of Austrian Empire, residing at Q Frankfort-on-the-Main, in the county of Hesse-Nassau and State of Prussia, Germany, have invented certain new and useful Improvements in Processes for Producing Gas of Bituminous Fuel Mixed by the Gas the gases produced in the coked layer of fuel by the addition of steam. v t

In previous processesand apparatus, during the blast, the air has been introduced at the lower end ofthe, fuelcolumn so that the hottest point was produced at the foot of the coke layer hence in'the gasification period, the gases entered the coal layer par; tially cooled and effected, only an incomplete gasilication. v g In the present process, the hottest part of the combustion columnlies on the border line between the layer of coke and the layer of green coal. For this reason, according to the present invention, therequisite combusf tion air is blown in, during the hot'fblast period, not underneath or. above,butapproximately I at the boundary between the already coked fuel and the still present green coal, and the combustion products are drawn oil at the lower endof the fuel column. i i y In the gasification period which :follows, steam is then forced throughout the entire column of fuel. By this process, during the ponents,-such as tar, benzol and such, by the passage of the combustion products. Moreover, the steam. afterpassing through the coked. fuel column, is further passed through the uncoked column in the generator apparatus, through which immediately previously the passage of the hot combustion products took, place. It is furthere pointed outthat, the steam on its en-.

trance into the generator, does not immediately reachthe hottest zone.

With generators of this kind the eflicient heating of the coke column is realized, by havingthe lower portion of the shaft o0 cupied by the coke-column subdiyided by a fire-bridge of'any. suitable height whose crown does not reach the zone separating the columns of coke and coal whereby it is possible to blow the coke-column alternately hot from both sides, from below, upward, and then again from above, down- Ward, and vice versa respectively, without the necessity of providing diflicult and troublesome air inlets and ports in the middleof the shaft for leading ofithe burnt gases, but in case-of necessity, there may be provided inthe neighborhood of the zone separating the columns of coal and coke, further. air inletsfor the purpose of pro ducing at this place the hottest mass of coke and ofobtaining, by the'outlets and inlets distributed over the whole section as rendered necessary by; the planes or slopes 9f the in r.. -ti sq generator is rendered "very easy, as the coke column may be brought at will to red heat, without the necessity of inserting an auxiliary chimney. And even in those cases, where during the gassing operation at the zone separating the coke-column from the coal column, air is in the known manner blown into the passing steam, this form of construction of the shaft may be advantageously made use of.

Furthermore, by using such a generator the important technical effects can be attained that the bottoms of the generator are heated to the necessary temperature by the grate, a far better uniformity of heatalternate blowing from below upward and then from above downward, and vice versa and the slag is easily removed inasmuch as by the reversed current of air itis drawn to the place where the air enters, at the ashhole.

The accompanying drawing illustrates the construction of the invention as"follows:'

Figure 1 shows a verticalsectionaltview 0f the generator furnace according to the .tion produets c and 0 arevalves-o'f the steam duct. dis a chimney in connection with the valve 6 there being -a' sim'ilar chimney connected to valve 6 for-the combustion products. a" is anrair vah mhich' air can enter through the duct iconne'eted with the steam valve n. if is-the escapepipe for the produced gas 'and isconnected with thereceiver it and the valve g. is is the fire-bridge which divides thelower'partof the generator-and reaches-up to near the lower end of thezone Z separating the-lower column oalready coked'and the upper col. umn mof uncoked fuel. 19 is'theclosable feed hopper; c 1 "The operation of the apparatus'is asffolows-:

The distilled'fueLthe coked fuel,- in the lower portion of the furnace, is blown red hot in the generatorby the air from the valvea whichascends through this part, descends through the second part of the shaft, leaves thesame through valve 5 and escapes through the chimney "Now steam is fed into the hotter 'part'of the double shaft from below at 0 oron' both sides at 0 and 0 and the water gas thereby produced 'meets in the separating zone 0, the upper air blown in through the air pipe 2', which'raises the temperature by arpartial combustion in this separating zone, 'distils V the coal in the fuel column as it ascends therethrough and leaves the furnace through the outlet'f, the receiver 72,- and the gas-valve 'g The nextblast is done in the opposite Edirection, inasmuch as the air enters the genwhereas the burnt chimney at the bottom of the opposite, part erator furnace through the valve at at the bottom of onepart of the double shaft, gas escapes into the near 6 For increasing the temperature and the combustionof the unburnt gasesstill produced'from half-coked fuel in" the double shaft, secondarygair may be fed through the air valve 6 during thehot blast and by a sufiicient supply of upperairduring the blast,a-temperature so high may be: attained in the-separating Zone that-during the gasperiond, a supply =of upper air through the valve ie'becomes superfluous. In case of 1 need, steam --may be suppliedthrough the valve" 11 during the gas-period, 'by which means a higheramount of ammonia can be received. a r

' The V principle of the invention; permits, ofcourse, many embodiments; Thekfirebridge is to be, dimensioned in such manner that its crown "will lie in 1 the; neighborhood of the zone separating the column's of coked. and uncoked'fuel. V F

With large furnaces this construction may lead to r th'e formation of two separately "lined single shafts.

The process'may'be executed in known manner to produce-generator-gas or watergas. As fuel any bituminous fuel as; black coal, brown'coal maybe used." i What I claim as my invention and desire to secure by Letters Patent is 2- in'presence of two witnesses. j

EUGEN DQLENSKY.

"Witnesses: r

' FRIEDRICH CARL WENTZEL, M x HER A N HOPPNEB.

' -*'-A-process of gas generation from a rol- 

